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Neotibicen auletes
''Neotibicen auletes'' commonly, but informally called the Northern dusk-singing cicada, Giant oak cicada, or Southern oak cicada, is a large bodied annual cicada which occurs in the eastern, central, and Southern United States as well as southern Canada. This cicada is the largest cicada in the genus ''Neotibicen'' and the largest cicada in North America, north of Mexico. Despite its frequently used common name, this cicada is most abundantly found in the south. ''N. auletes'' is almost exclusively associated with oak trees, Quercus, rather than other eastern hardwoods.
==Description==
Average body length for this cicada (not including wings) is between 39–46 mm for males, and 34–38 mm for females. Body coloration is mostly olive green of varying shades/tints. The pronotum is typically a rich olive green with well-defined black markings. The Mesothorax is black with olive green or brown pattering. The patterning on the body of this species is characteristic of all ''Neotibicen'' cicadas. The abdomen is black. The venter is heavily pruinose, and a black medial stripe is present. The eyes of this cicada when alive are usually light tan or green, although they may also be brown or slate. It should also be noted, that this particular species is heavily pruinose on the body, and may appear to be dusted with flour, or moldy. Some individuals may be entirely covered with pruinosity, and the body coloration and markings may be obscured or masked.
''Neotibicen auletes'' has two color forms. A common color form described above ("Green form"), and a less commonly encountered "Red" color form. The red form is similar to the normal form, but instead of being mostly green and olive in coloration, the body is mostly reddish-brown. Typical patterning and heavy pruinosity are retained, however, "greens" are replaced with "reds/rusts" as the dominant body color. The red form is isolated in distribution to the mid-Atlantic states particularly North and South Carolina and Virginia. Because of the coloration of the red form, it can be readily confused with ''Neotibicen resonans'', a similarly-colored and sized cicada species found primarily in coastal areas of Florida and the Deep South.
The call of ''Neotibicen auletes'' is a loud, grating, pulsating drone lasting up to 50 seconds. Vocalization of the call can be best described as rapid Dirr-Dirr-Dirr-Dirr, etc. lasting 40–50 seconds before winding down. Before calling, there is also a slow "winding up" phase; rrrrrrrrrrrr...Dirrrrrrrr...Dirrrrrrr, before the "true" call begins.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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